Internal Torx, External Hex, Hex, TX, External Torx
Imperial, Torx, AF, Metric, SAE
8 mm, 6 mm, 7/8 ", 5.5 mm, 12 mm
3/8, 1/4, 1-1/2, 2-1/2, 1/2
38.1, 19.05, 9.53, 12.5, 25.4
Special Steel, Molybdenum Steel, Alloy Steel, Steel, Chrome Molybdenum Alloy Steel
Gun-metal, Phosphated, Oxidised, Black Phosphate, Black Oxide